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3 years ago

Write an expression that means the sum of six and the product of three and d

Mathematics

1 answer:

Mrac [35]3 years ago

4 0

Answer:

6 + (3xd)

Step-by-step explanation:

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The height of the tunnel at the center is 35ft, and the vertical clearance must be 21 ft at a point of 8ft from the center. Find

Zinaida [17]

Answer:

y=-0.215x^2+35

Step by Step:

Let, $h=0$ , $k=35$ , $x=8$ , $y=21$

We know that, the general equation of the parabola.

$y-k = a(x-h)^2$

$\Rightarrow y=a(x-h)^2+k .........(i)$

Substitute the value of $h, k, x, y$ in equation $(i)$ and find the value of $a.$

$21=a(8-0)^2+35$

$\Rightarrow 21=a\times 8^2+35$

$\Rightarrow 21=64a+35$

$\Rightarrow 64a=21-35$

$\Rightarrow 64a=-14$

$\Rightarrow a=\frac{-14}{65}$

$\Rightarrow a=-0.215$

Hence, the equation of the parabola is:

$y=-0.215x^2+35$

8 0

3 years ago

Help solve for r????

Aleonysh [2.5K]

$\ \frac{66(r)}{22} - ( \frac{16}{16} - 1) = r + \frac{72}{3} \div 3 \\ \frac{3r}{1} - 0 = r + 72 \\ 3r = r + 72 \\ r = 36$

3 0

4 years ago

Select the sentence that has no punctuation or capitalization errors.

Harman [31]

Answer:

a. Mom said, "Stephanie, please come here".

8 0

3 years ago

Read 2 more answers

A rectangular football field is 64 meters wide and 100 maters long. A player runs from one corner of the field in a diagonal lin

Dimas [21]

Answer:

119 or 118.726577

Step-by-step explanation:

We should use the Pythagorean Theorem to solve this problem.

a^2+ b^2=c^2

64^2+100^2=c^2

4096+10000=14096

c^2=14096

c=\sqrt{14096}14096

And the root of 14096 is 118.726577.

So the Answer is About 119 meters, or 118.726577

hope this helps!

3 0

3 years ago

How to convert .75 to 3/4

Travka [436]

Answer:

Back to your fraction 3/4, if you have 3 parts of 4, you have 3 25% slices which is 3 * 25% = 75%. Now that you have 3/4 as a percentage you simply have to covert the percent to a decimal. To do this you will just move the decimal 2 places to the left.

Step-by-step explanation:

mark me as the brainliest

8 0

3 years ago